NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-04-13 | 717-956 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - PA | 547E | HARISBGZN1 | PA |
| 2017-03-16 | 717-864 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | ONVOY, LLC - PA | 547E | WRIGHTSVL | PA |
| 2017-03-16 | 717-931 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - PA | 547E | DOVER | PA |
| 2016-03-16 | 717-470 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - PA | 547E | JONESTOWN | PA |
| 2016-03-16 | 717-970 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - PA | 547E | MYERSTOWN | PA |
| 2016-03-03 | 717-276 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - PA | 547E | ANNVILLE | PA |
| 2016-03-03 | 717-297 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | MT GRETNA | PA |
| 2016-02-09 | 717-696 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - PA | 547E | LANCASTER | PA |
| 2015-12-11 | 717-727 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - PA | 547E | HARISBGZN1 | PA |
| 2013-01-09 | 717-963 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - PA | 547E | HARISBGZN1 | PA |
| 2008-03-27 | 717-884 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - PA | 547E | HARISBGZN1 | PA |
| 2002-09-24 | 717-388 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - PA | 547E | MIDDLETOWN | PA |
| — | 717-296 | 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC - PA | 547E | BLRDGSUMMT | PA |
| — | 717-313 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - PA | 547E | YORK | PA |
| — | 717-326 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - PA | 547E | YORK | PA |
| — | 717-427 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - PA | 547E | LANCASTER | PA |
| — | 717-500 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - PA | 547E | HERSHEY | PA |
| — | 717-754 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - PA | 547E | HARISBGZN1 | PA |
| — | 717-800 | 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | ONVOY, LLC - PA | 547E | SPRING GRV | PA |
| — | 717-820 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - PA | 547E | JONESTOWN | PA |
| — | 717-828 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - PA | 547E | HARISBGZN1 | PA |
| — | 717-868 | 0–9 XXXall 10 · 7 holders which blocks → | ONVOY, LLC - PA | 547E | ANNVILLE | PA |
| — | 717-876 | 1XXX3XXX6XXX8XXX · 3 holders which blocks → | ONVOY, LLC - PA | 547E | MILLERSVL | PA |
| — | 717-900 | 0–9 XXXall 10 · 6 holders which blocks → | ONVOY, LLC - PA | 547E | YORK | PA |
| — | 717-924 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - PA | 547E | LANCASTER | PA |
| — | 717-999 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - PA | 547E | HARISBGZN2 | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.